Obviously not knowing your job situatuion I apologize if you percieved my post as ignorant.
Anyway: as a flight instructor you are the leading edge of aviation safety. What you do as a FI is maybe the greatest single safety influence a pilot will ever face. As a professional it is your responisbility to not accept to give substandard instruction -- my philosophy is that if it can't be done right, it shouldn't be done. Even if that means a lower pay check at the end of the day. That may also mean standing up to your boss.
Not teaching people to fly the proper way is a safety concern and is, IMHO, unacceptable.
With the FI shortage everyone is talking about these days, maybe there is a better place out there for you, where your skills will be more appreciated?